An active noise barrier with unidirectional secondary sources
An active noise barrier with unidirectional secondary sources is investigated in this paper, where the unidirectional secondary source consists of two closely located loudspeakers with pre-adjusted phase difference. The secondary sound field of the unidirectional sources is adjusted to maximally mat...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2011
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/94100 http://hdl.handle.net/10220/7016 |
| _version_ | 1826125886918754304 |
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| author | Chen, Weisong Rao, Wei Min, Hequn Qiu, Xiaojun |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Chen, Weisong Rao, Wei Min, Hequn Qiu, Xiaojun |
| author_sort | Chen, Weisong |
| collection | NTU |
| description | An active noise barrier with unidirectional secondary sources is investigated in this paper, where the unidirectional secondary source consists of two closely located loudspeakers with pre-adjusted phase difference. The secondary sound field of the unidirectional sources is adjusted to maximally match the primary
sound field in the shadow zone behind the barrier. It is shown both numerically and experimentally that the noise reduction performance of the active noise barrier can be improved remarkably by replacing monopoles with the unidirectional sources. The mechanism for the improvement is also investigated. |
| first_indexed | 2024-10-01T06:44:03Z |
| format | Journal Article |
| id | ntu-10356/94100 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:44:03Z |
| publishDate | 2011 |
| record_format | dspace |
| spelling | ntu-10356/941002023-03-04T17:18:10Z An active noise barrier with unidirectional secondary sources Chen, Weisong Rao, Wei Min, Hequn Qiu, Xiaojun School of Mechanical and Aerospace Engineering DRNTU::Science::Physics::Acoustics and sound An active noise barrier with unidirectional secondary sources is investigated in this paper, where the unidirectional secondary source consists of two closely located loudspeakers with pre-adjusted phase difference. The secondary sound field of the unidirectional sources is adjusted to maximally match the primary sound field in the shadow zone behind the barrier. It is shown both numerically and experimentally that the noise reduction performance of the active noise barrier can be improved remarkably by replacing monopoles with the unidirectional sources. The mechanism for the improvement is also investigated. Accepted version 2011-09-08T01:19:02Z 2019-12-06T18:50:38Z 2011-09-08T01:19:02Z 2019-12-06T18:50:38Z 2011 2011 Journal Article Chen, W., Rao, W., Min, H., & Qiu, X. (2011). An active noise barrier with unidirectional secondary sources. Applied Acoustics, 72(12), 969-974. 0003-682X https://hdl.handle.net/10356/94100 http://hdl.handle.net/10220/7016 10.1016/j.apacoust.2011.06.006 160034 en Applied acoustics © 2011 Elsevier. This is the author created version of a work that has been peer reviewed and accepted for publication by Applied Acoustics, Elsevier. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [DOI: http://dx.doi.org/10.1016/j.apacoust.2011.06.006]. 6 p. application/pdf |
| spellingShingle | DRNTU::Science::Physics::Acoustics and sound Chen, Weisong Rao, Wei Min, Hequn Qiu, Xiaojun An active noise barrier with unidirectional secondary sources |
| title | An active noise barrier with unidirectional secondary sources |
| title_full | An active noise barrier with unidirectional secondary sources |
| title_fullStr | An active noise barrier with unidirectional secondary sources |
| title_full_unstemmed | An active noise barrier with unidirectional secondary sources |
| title_short | An active noise barrier with unidirectional secondary sources |
| title_sort | active noise barrier with unidirectional secondary sources |
| topic | DRNTU::Science::Physics::Acoustics and sound |
| url | https://hdl.handle.net/10356/94100 http://hdl.handle.net/10220/7016 |
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